diff options
Diffstat (limited to 'fs/ext4/balloc.c')
| -rw-r--r-- | fs/ext4/balloc.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index 5d45582f9517..c4dd1103ccf1 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -165,7 +165,7 @@ restart: printk("Block Allocation Reservation Windows Map (%s):\n", fn); while (n) { - rsv = list_entry(n, struct ext4_reserve_window_node, rsv_node); + rsv = rb_entry(n, struct ext4_reserve_window_node, rsv_node); if (verbose) printk("reservation window 0x%p " "start: %llu, end: %llu\n", @@ -747,7 +747,7 @@ find_next_usable_block(ext4_grpblk_t start, struct buffer_head *bh, here = 0; p = ((char *)bh->b_data) + (here >> 3); - r = memscan(p, 0, (maxblocks - here + 7) >> 3); + r = memscan(p, 0, ((maxblocks + 7) >> 3) - (here >> 3)); next = (r - ((char *)bh->b_data)) << 3; if (next < maxblocks && next >= start && ext4_test_allocatable(next, bh)) @@ -966,7 +966,7 @@ static int find_next_reservable_window( prev = rsv; next = rb_next(&rsv->rsv_node); - rsv = list_entry(next,struct ext4_reserve_window_node,rsv_node); + rsv = rb_entry(next,struct ext4_reserve_window_node,rsv_node); /* * Reached the last reservation, we can just append to the @@ -1165,7 +1165,7 @@ retry: * check if the first free block is within the * free space we just reserved */ - if (start_block >= my_rsv->rsv_start && start_block < my_rsv->rsv_end) + if (start_block >= my_rsv->rsv_start && start_block <= my_rsv->rsv_end) return 0; /* success */ /* * if the first free bit we found is out of the reservable space @@ -1210,7 +1210,7 @@ static void try_to_extend_reservation(struct ext4_reserve_window_node *my_rsv, if (!next) my_rsv->rsv_end += size; else { - next_rsv = list_entry(next, struct ext4_reserve_window_node, rsv_node); + next_rsv = rb_entry(next, struct ext4_reserve_window_node, rsv_node); if ((next_rsv->rsv_start - my_rsv->rsv_end - 1) >= size) my_rsv->rsv_end += size; @@ -1288,7 +1288,7 @@ ext4_try_to_allocate_with_rsv(struct super_block *sb, handle_t *handle, } /* * grp_goal is a group relative block number (if there is a goal) - * 0 < grp_goal < EXT4_BLOCKS_PER_GROUP(sb) + * 0 <= grp_goal < EXT4_BLOCKS_PER_GROUP(sb) * first block is a filesystem wide block number * first block is the block number of the first block in this group */ @@ -1324,10 +1324,14 @@ ext4_try_to_allocate_with_rsv(struct super_block *sb, handle_t *handle, if (!goal_in_my_reservation(&my_rsv->rsv_window, grp_goal, group, sb)) grp_goal = -1; - } else if (grp_goal > 0 && - (my_rsv->rsv_end-grp_goal+1) < *count) - try_to_extend_reservation(my_rsv, sb, - *count-my_rsv->rsv_end + grp_goal - 1); + } else if (grp_goal >= 0) { + int curr = my_rsv->rsv_end - + (grp_goal + group_first_block) + 1; + + if (curr < *count) + try_to_extend_reservation(my_rsv, sb, + *count - curr); + } if ((my_rsv->rsv_start > group_last_block) || (my_rsv->rsv_end < group_first_block)) { @@ -1525,10 +1529,8 @@ retry_alloc: if (group_no >= ngroups) group_no = 0; gdp = ext4_get_group_desc(sb, group_no, &gdp_bh); - if (!gdp) { - *errp = -EIO; - goto out; - } + if (!gdp) + goto io_error; free_blocks = le16_to_cpu(gdp->bg_free_blocks_count); /* * skip this group if the number of @@ -1562,6 +1564,7 @@ retry_alloc: */ if (my_rsv) { my_rsv = NULL; + windowsz = 0; group_no = goal_group; goto retry_alloc; } |